Phonograph attachment



S. J. GINSBURG. PHONOGRAPH ATTACHMENT.

APPLICATION FILED MAY 3. 1921.

:1, 41 8,25 1 PatentedMay 30, 192 2.

JIIIIIIIIIIQIII/lllllfll sAMUnL J. GINSIBURG, or DENVER, cote-nape.

PHONOGRAPH ATT'AICHMENTI T 0 all whom it may concern Be it known that I, SAMUEL J. GrNsBURe, a citizen of the United States, resldlng at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Phonograph Attachments; and I do hereby declare the. following to be a full, clear, and exact descripnumeral 1 indicates a fragmentary portion tion of the invention, such as will enable others skilled in the art to which it appertain to make andiuse the same.

This invention relates to new and useful improvements in phonograph attachments and has for its primary object the provision of means for visibly indicating the exact tension of the propelling spring of the pl1onograph motor, whereby a person may readily determine approximately the number of records played since the winding of the spring and the 'number of records which may be still played before the exhaustion of the spring.

Another object of this invention is the provision of an automatic alarm adapted to warn the operator of the approximate exhaustion of-the spring and also warn the operator when the spring has become fully wound, to prevent overrwi'nding and thereby obviate the danger of injuring or breaking the spring and other parts associated therewith. l i

A further object of this invention is the provision of a phonograph attachment of the above stated character which will be simple, durable, and efficient, and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination, and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a fragmentary vertical sectional view illustrating a portion of a phonograph with my invention applied thereto,

Figure 2 is a fragmentary horizontal sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a plan view illustrating the indicator and the scale plate,

Specification of easement. P t t May 30 -2 Application filed May 3, 1921. Serial No. 466,552.

a of the motorand the feed nut.

II'eferring in detail to the drawings, the

of a phonograph cabinet having located therein a spring motor 2 of aeonven-tional type for driving the record table 3. The spring-' 1 of the spring motor 2 is wound by a shaft 5 by having its inner end secured to said shaft while the outer end is secured to the casing 6 which rotates during the unwinding of the spring.- The shaft 5 is rotated by a crank 7 for the purpose of winding the spring 4. The foregoing description relates to a well known constructionof phonograph and to whichm-y invention is applied. p I

The shaft 5 is extended and has formed thereon screw threads 8 which cooperate on the extended end. of the-shaft 5. The feed nut 9 has pivotally secured thereto a connecting arm- 10 constructed of telescopic sections and has its other end pivotally connected to the outer convolution of the spring 4 and adjacent to the end. of the spring wh ch .is attached to the casing 6 of the spring motor 2'. The feed nut 9 has'formed thereona grooved collar 11 engaged by the forl re'd end 12 of an indicating rod 18. The indicating rod 13' is slidably mounted in a serles of horizontally disposed guides 14; carried by the cabinet 1 and the upper end of said rod projects through a slot 15 in the top wall of said cabinet-and also through a.

upon the plate 17 on the movement of the rod 13 sothat the operator may readily determine at a glance just the condition of the spring 4.

In operation, the spring a of the spring motor 2 is wound by the rotation of the shaft 5 in one direction and during the unwinding of the springer to operate the turn table 8 the casing 6 rotates in the same direction as the rotation of the shaft 5 to wind with screw'thread's in a feed nut 9 mounted I the spring, consequently the rotation of the shaft to wind the spring causes the feed nut 9 to move in one direction carrying with the same the indicating rod which causes the indicator 18'to move in one direction on the scale plate 17. The unwinding of the spring at to propel or rotate the table 3 as before stated, the casing 6 rotates in the same direction as the shaft 5 and owing to the fact that the arm 10 is connectedto the outer convolution of the spring 4 the feed nut 9 is rotated on the screw threads'S of the shaft 5 and caused to move in a direction opposite to the first described direction, thus moving the indicator 18 in an opposite direction over the scale plate 17.

An alarm 19 of any well known construction is located within the cabinet 1 and is provided with a pair of actuating arms 20 and2l. The actuating arms are so disposed that the movement of-the indicating rod 13 is between said arms so that upon the inclicating rod reaching approximately the end of its movement in either direction. engages one of the arms and actuates the alarm 19 thus indicating to ,the. operator the approximate exhaustion ofthe spring and also warns the operator when the spring has be-' coinefully Wound to prevent overwindin YVhile I'have shown and described the preferred embodlment of my invent on, 1t

will be understood that minor changes in construction, combination, and arrangement ofparts may be made WltllOHt departing from the spirit and scope of the invention as claimed. I

Having thus described my invention what I claim is:-'

I 1. In combination, a spring motor having a spring secured to a' rotatable shaft and a casing, a feed nut moved in one direction by the rotation of the shaft, meansconnecting the feed nut to the outer convolution of the spring to cause the feed nut. to rotate with the casing on the unwinding of the spring to cause movement of the feed nut in an opposite direction, and an indicator operated by the movementof the feed nut.

2. In combination, a'sp'ring motor inc1uding a spring connected to a rotatable shaft and a rotatable casing, feed threads formed onsaid shaft, afeed nut on said feed threads, and caused to, move in one direction by the rotation of said shaft, means connecting the feed nut to the outer convo lution of the spring adjacentto its attachment to the casing to cause said feed nut to' rotate with the casing and cause movement of the feed nut in an opposite direction, and an indicator connected to the feed nut and adapted to move with the same.

.3. In combination, a spring motor including a spring connected to a rotatable shaft and a rotatable casing, feed threads on said shaft, a feed nut on said feed threads, an

indicator connected tosaid feed nut, and an ad ustable arm pivoted to the'feed nut and to the outer convolution of the spring.

l. In combination, a phonograph includ- 111 Y a cabinet and a S31l11 motor havin a spring connected to a rotatable shaft'and a said nut, an indicating rod having a forked end engaging the grooved flange, guides carried by the cabinet and receiving the indicating rod, an indicating plate carried by said cabinet, a pointer carried by the indicating'rodand movable over the plate, an alarm. located in the cabinet, and actuating arms for said alarm and adapted to be engaged by the indicating rod when the latter reaches the approximate end of its movement in either direction.

In testimony whereof I aflix my signature in presence of two witnesses.

SAMUEL J. GINSBURG.

lVitnesses:

Mounts BERRY, SAMUEL Frsnnn. 

